386 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 83 



Color: Black; flagelliim of antenna grayish dull dark brown udth 

 extreme apex usually paler, pale area sometimes more extensive 

 beneath; scape bluish or greenish; legs brown; coxae blackish brown, 

 the posterior pair often with a greenish, bluish, or violaceous reflec- 

 tion; posterior femora outwardly greenish, bluish, or violaceous, or 

 with such reflections, anterior and intermediate pairs sometimes with 

 such reflections; anteiior tibiae testaceous to brown with a darker 

 stripe above, intermediate and posterior pairs also darker above, the 

 outer face of posterior usually, and of intermediate sometimes, with 

 a bluish or greenish reflection; tarsi testaceous to brownish; wings 

 hyaline, veins testaceous to brown, sometimes reddish basally. 



Male. — Length about 2.5-3 mm. Essentially similar to female; 

 scape slender, portion bearing sensorial punctures not greatly broad- 

 ened at apex and occupying one-half or somewhat less than one-half 

 of scape, sensoria coarse and dense. 



Ty^g.— U.S.N.M. no. 49781. 



Type locality .—Glancnxljn, Va. 



Remarks. — The type and allotype were taken, respectively, in June 

 and July. 



Described from four females and five males. Of the three female 

 paratypes, one, from Van Cortland, N. Y. (July, J. L. Zabriskie), is 

 in the American Museum of Natural Histor}'^; one, from Swarth- 

 more, Pa. (July), is in the Academy of Natural Sciences of Philadel- 

 phia; and the third (in rather poor condition), from Riverton, N. J. 

 (Aug., C. W. Johnson), is in the collection of the Boston Society of 

 Natural History. Of the four male paratypes, one, from Laurel, 

 Md. (July, E. B. Marshall), is in the U. S. National Museum; one, 

 from Falls Church, Va., and another, from Laurel, Md. (July, E. B. 

 Marshall), are in the Museum of Comparative Zoology; and one, 

 from Glencarlyn, Va. (July), is in the collection of Prof. C. T. Brues, 

 of Harvard University. 



PERILAMPUS SUBCARINATUS Crawford 



Perilampvs subcarinatufi Crawford, Proc. Ent. Soc. Washington, vol. 16, j). 70, 



1914. 

 Perilampus bakeri Crawford, ibid., p. 72. 



Female. — Length about 2.5-3.75 mm. Head: Frons \vith a carina 

 extending from behind the anterior ocellus downward on each side of 

 the scrobal cavity nearly to level of insertion of antennae or beyond, 

 the carina sometimes delicate; frons laterad of carina and ocellocular 

 area sometimes smooth, sometimes distinctly sculptured (the sculp- 

 turing more common and usually more conspicuous in males); emar- 

 gination of frontovertex broadly or rather broadly arcuate; the 

 distance between lateral ocellus and nearest point on carina as a rule 

 distinctly or considerably shorter than shortest distance from tliis 

 point on carina to anterior ocellus; emargination touching or nearly 



